Thanks for the interest in the recipe! Although I've never used that particular brand of soybean paste, in my experience, Korean soybean pastes (like Haechandle) are usually a lot sweeter and a different texture than Japanese soybean pastes. Who knows though, haha, it may actually turn out better!

I'd say give it a shot anyway, I'd love to hear about the results. Otherwise, you could always get red miso paste through Amazon~